Anodized Aluminum Extrusion with PowderCoated Steel Construction Patented Parallelogram Design for Easy Rear Vehicle Access Spring Loaded Pull Pin Release for Easy Maneuverability Up Down QuietRide Locking Tightening AntiRattle Technology Super Reinforced Top Plate Holds Four Bikes or 150 lbs Accommodates Children Adult Bicycles Includes Padded AntiSway Cradles Rubber Straps EndofArm Safety Reflectors for Nighttime Visibility Cable Lock Included Weig